Sheltered from Harm: BBC Radio 4's File on 4
There are more than half a million people living in sheltered housing, accommodation that offers additional support to the elderly, disabled or vulnerable. But currently, in England, these schemes aren't overseen by the independent regulator of health and social care, the Care Quality Commission, and councils aren't required to record cases of abuse and neglect in sheltered housing.
It is leading to growing concerns that many vulnerable residents are hidden away and left to suffer without the authorities ever knowing there is a problem.
Click here to listen again on the BBC iPlayer
Also see: The Independent: More than 30000 instances of abuse in sheltered housing over last three years, finds investigation